Simturb/Beltrami: Design of turbomachine blade profile

FreeCAD Beltrami Workbench

Design a turbine blade profile within FreeCAD

Image of Beltrami

Usage

You always start from an existing design. Then you just have to modify it. You can start from the original design nested in Beltrami or load an example that comes close to your goal.

Documentation

A user manual can be found online

Note: All the documentation has been generated in French. However, your web browser translator works very well. MS Edge seems to have the best friendly translator.

Image of Installation

Here is the video that presents the Beltrami workbench: https://youtu.be/O_abwUuA4Ec

Prerequisites

FreeCAD v0.20.1 and higher
FreeCAD Curves workbench version 0.5.12 or higher. Available via the Addon Manager.

Installation

Beltrami workbench is available for install via the FreeCAD Addon Manager.

For more details about the installation process reference the manual.

Theory

Background on the theory behind Beltrami can be found in this section of the manual.

Examples

See the Examples section of this repository to find the provided examples of Beltrami in action.

Francis Turbine Blades

Image of Francis

Kaplan Turbine Blades

Image of Kaplan

Centrifugal Pump Blades

Image of pump

Radial Cascade Blade

Image of radial Cascade blade

Discussions/Feedback/Support

Email contact: [email protected]
Dedicated FreeCAD forum thread
Bugs: https://github.com/Simturb/Beltrami/issues (please discuss on the forum thread beforehand)
Dedicated YouTube channel/playlist YouTube SimTurb/Beltrami

Licence

Beltrami workbench is released under the LGPL2.1+ licence. See LICENSE file.

Warning

This Beltrami workbench is in ALPHA state along with the Curves WB on which it is based.

Release notes

### Release 1.0.8.1 :
-Internal code for B-spline modified, Radius replaced by Weight, initial Weight is now 1 adimensional.
-Variables in Tableau_pilote displaced and modified accordingly, variables Poids_entree and Poids_sortie.

### Release 1.0.8 : 
- Implements surfaces with better tangent continuity at leading edge. 
- Modifies slightly user interface (some names are changed)
- Solves minor bugs
- Optimises the structure of the code
- Previous files are not compatible. From Interface_Usager, you simply have to transfer data from the sketch Meridien (12 2D points) and the spreadsheet Tableau_Pilote (copy-paste). And, of course transfer data from the FeaturePython Parametres.
- Be sure to update Curves WB